/*
 * Copyright 2020 Trino
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.oltpbenchmark.util;

public class RowRandomBoundedLong {
  private final RowRandomLong randomLong;
  private final RowRandomInt randomInt;

  private final long lowValue;
  private final long highValue;

  public RowRandomBoundedLong(long seed, boolean use64Bits, long lowValue, long highValue) {
    this(seed, use64Bits, lowValue, highValue, 1);
  }

  public RowRandomBoundedLong(
      long seed, boolean use64Bits, long lowValue, long highValue, int seedsPerRow) {
    if (use64Bits) {
      this.randomLong = new RowRandomLong(seed, seedsPerRow);
      this.randomInt = null;
    } else {
      this.randomLong = null;
      this.randomInt = new RowRandomInt(seed, seedsPerRow);
    }

    this.lowValue = lowValue;
    this.highValue = highValue;
  }

  public long nextValue() {
    if (randomLong != null) {
      return randomLong.nextLong(lowValue, highValue);
    }
    return randomInt.nextInt((int) lowValue, (int) highValue);
  }

  public void rowFinished() {
    if (randomLong != null) {
      randomLong.rowFinished();
    } else {
      randomInt.rowFinished();
    }
  }

  public void advanceRows(long rowCount) {
    if (randomLong != null) {
      randomLong.advanceRows(rowCount);
    } else {
      randomInt.advanceRows(rowCount);
    }
  }
}
